what is atom?
answer in 50- 100 words
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An atom is the smallest unit of matter that forms a chemical element.the matters like solid,liquids and gases are composed of these neutralised or ionised atoms
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An atom is the smallest unit of ordinary matter that forms a chemical element every solid , liquid , gas and plasma is composed of a neutral or ionized atom . Atom are extremely small , typically around 100 picometers across .
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